The soviet union faced a serious foreign-policy crisis in which country?

a. the united states
b. bulgaria
c. germany
d. afghanistan

The Soviet Union faced a serious foreign-policy crisis in Afghanistan. Option D is correct.

The Soviet Union, officially known as the Union of Soviet Socialist Republics (USSR), constituted a socialist state in Eurasia that protracted from 1922 to 1991. Being a union of multiple national Soviet republics, its government and economy were highly centralized. The country was a one-party state, ruled by the Communist Party with Moscow as its capital.

the world may never know

well that depends on how deep the hole is. you'd first go through te crust of the earth, then the upper mantle, then the lower mantle then the outer core, then the inner cor then you'd be stuck in the core to melt.